Tziona completed her Bachelor’s degree in psychology at Concordia University and pursued her doctoral studies in clinical psychology at the Université de Montréal. Since 2013, she has worked as a psychologist with the hematology-oncology team at CHU Sainte-Justine. She is currently conducting research on the transition from pediatric to adult healthcare for adolescents with chronic illnesses, aiming to develop methods that improve how well patients are prepared before moving to adult care.